On the plus side ... the obligation of having an alcohol tester in your car should be gone by now.
I did read somewhere it was only a temporary reprieve, this is the most upto date Info I found doing a quick search.
http://www.english.rfi.fr/visiting-france/20121009-drivers-france-given-extra-time-buy-mandatory-alcohol-testsWhat new law will it be next year I wonder
, it seems like every year I've driven to Le Mans there is something else to buy.
I'm guessing only people driving a Peugeot, Citroen or Renault can cross the border